松辽盆地西部斜坡青山口组三段中上部岩性地层圈闭有利区带预测  

PREDICTION OF THE FAVORABLE LITHOSTRATIGRAPHIC TRAP ZONE AND BELT ON K_2QN^3 TOP-MIDDLE ON WEST SLOPE OF SONGLIAO BASIN

作　　者：梁江平[1] LIANG Jiangping(Exploration and Development Research Institute of Daqing Oilfield Co Ltd.,Daqing 163712,China)

机构地区：[1]大庆油田有限责任公司勘探开发研究院,黑龙江大庆163712

出　　处：《大庆石油地质与开发》2018年第4期1-9,共9页Petroleum Geology & Oilfield Development in Daqing

基　　金：国家科技重大专项"全球重点领域油气地质与富集规律研究"(2016ZX05029-001-002)

摘　　要：松辽盆地北部西部斜坡青山口组三段中上部具有形成岩性地层型圈闭的地质条件。利用钻井、地震等资料,将青三段划分为3个四级层序和6个四级层序的体系域,在分析各体系域的沉积微相特征及分布规律、有利砂体分布和青山口组三段顶面构造特征的基础上,建立各四级层序不同沉积相带的组合及其与油气运聚、构造特征的匹配关系,进行岩性地层圈闭的有利区带预测。研究结果表明:松辽盆地北部西部斜坡岩性地层圈闭发育区划分为A、B、C、D、E区,A岩性地层圈闭区是下一步油气勘探和石油地质研究最重要的对象,B岩性地层圈闭区中北部、C岩性地层圈闭区南部、D岩性地层圈闭区北部、E岩性地层圈闭区东侧北部在下一步油气勘探和石油地质研究中也值得重视。研究思路和结果对松辽盆地西部斜坡及具有相似地质条件地区的油气勘探具有指导意义。K2qn3 Top-Middle of Qingshankou Formation on West Slope of North Songliao Basin have the geological conditions for forming lithologic stratigraphic traps. With the help of the drilling,seismic and the other data,the member was divided into 3 four-level sequences and 6 four-order sequence system tracts,on the bases of the analyzed characteristics of the sedimentary microfacies and distribution law of each tract,the distribution of the favorable sandbodies and the structural features on K2 qn3 top,the matching relationships among different combinations of the sedimentary facies zone and belt of each four-order sequence with the hydrocarbon migration-accumulation and structural characteristics,and moreover the prediction of the favorable belt of the lithostratigraphic trap was conducted. The study achievements show that the developed lithostratigraphic trap on West Slope of North Songliao Basin can be divided into Block A,B,C,D and E,Block A is the most important object in the next step of the oil-gas exploration and petroleum geology research,while the following regions are worthy to be emphasized at the sametime： the middle and northern parts of Block B,the southern part of Block C,the northern part of Block D and the northern part of East Block E. The research thought and achievements possess the guiding significances for the petroleum exploration on West Slope of Songliao Basin and the other regions with the similar geologic conditions.

关 键 词：岩性地层圈闭 层序地层格架 沉积微相 有利勘探油气区 松辽盆地 西部斜坡 青三段 

分 类 号：TE121.3[石油与天然气工程—油气勘探]